syntax error, unexpected '=', expecting keyword_end flash [:notice] = "Article was submitted succsefully"

I have this error which is not letting me look at articles that are created

here are my codes article_controller.rb file:

class ArticlesController < ApplicationController

   def new
     @article = Article.new 
   end
   def create
  @article = Article.new(article_params)


 if  @article.save
  flash [:notice] = "Article was submitted succsefully"
  redirect_to_article_path(@article)
else
   render :new
 end 
end 
    private 
    def article_params 
       params.require(:article).permit(:title, :description)

    end





   end




end 

ask me for any other files if you need them